Reverse cycle air-con can be sustainable, after all

Last week, I asked how air-conditioning could be considered a “sustainable” renovation (as promoted by Fair Trading in their somewhat premature notes on minor renovations). Well, blow me down with a ceiling fan – reverse cyle air-con CAN be sustainable as a means of heating a home – and very much so. But there’s a catch …
https://www.flatchat.com.au/air-con-reversal/